/**
* Licensed to Cloudera, Inc. under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Cloudera, Inc. licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.cloudera.flume.reporter;
import java.io.IOException;
import java.util.Collection;
import org.arabidopsis.ahocorasick.AhoCorasick;
import org.junit.Assert;
import org.junit.Test;
import com.cloudera.flume.ExampleData;
import com.cloudera.flume.core.EventImpl;
import com.cloudera.flume.core.EventSource;
import com.cloudera.flume.core.EventUtil;
import com.cloudera.flume.handlers.debug.NoNlASCIISynthSource;
import com.cloudera.flume.reporter.builder.MultiGrepReporterBuilder;
import com.cloudera.flume.reporter.histogram.MultiGrepReporterSink;
import com.cloudera.util.Histogram;
public class TestMultiGrep implements ExampleData {
final static String NPE = "NullPointerException";
final static String LOST = "Lost tracker";
final static String[] searches = { NPE, "ConnectException",
"Retrying connect to server", "Receiving block", "Received block", LOST,
"mapred.TaskTracker: Resending" };
@Test
public void testMultiGrep() throws IOException, InterruptedException {
// build the aho from the file.
AhoCorasick<String> aho = new AhoCorasick<String>();
for (String s : searches) {
aho.add(s.getBytes(), s);
}
MultiGrepReporterSink<String> snk = new MultiGrepReporterSink<String>(
"multi grep", aho);
snk.open();
EventSource src = new NoNlASCIISynthSource(25, 100, 1);
src.open();
EventUtil.dumpAll(src, snk);
snk.append(new EventImpl(NPE.getBytes()));
snk.append(new EventImpl(LOST.getBytes()));
snk.append(new EventImpl(LOST.getBytes()));
Histogram<String> h = snk.getHistogram();
System.out.println(h);
Assert.assertEquals(3, h.total());
Assert.assertEquals(2, h.get(LOST));
Assert.assertEquals(1, h.get(NPE));
snk.close();
src.close();
}
@Test
public void testMultiGrepBuilder() throws IOException, InterruptedException {
Collection<MultiGrepReporterSink<String>> c = new MultiGrepReporterBuilder(
HADOOP_GREP).load();
Assert.assertEquals(1, c.size());
MultiGrepReporterSink<String> snk = c.iterator().next();
snk.open();
EventSource src = new NoNlASCIISynthSource(25, 100, 1);
src.open();
EventUtil.dumpAll(src, snk);
snk.append(new EventImpl(NPE.getBytes()));
snk.append(new EventImpl(LOST.getBytes()));
snk.append(new EventImpl(LOST.getBytes()));
Histogram<String> h = snk.getHistogram();
System.out.println(h);
Assert.assertEquals(3, h.total());
Assert.assertEquals(2, h.get(LOST));
Assert.assertEquals(1, h.get(NPE));
snk.close();
src.close();
}
}